Compact ultrafast neutron sources via bulk acceleration of deuteron ions in an optical trap

作     者：Zhiyu Lei Hanghang Ma Xiaobo Zhang Lin Yu Yihang Zhang Yutong Li Suming Weng Min Chen Jie Zhang Zhengming Sheng Zhiyu Lei;Hanghang Ma;Xiaobo Zhang;Lin Yu;Yihang Zhang;Yutong Li;Suming Weng;Min Chen;Jie Zhang;Zhengming Sheng

作者机构：Key Laboratory for Laser Plasmas and School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Centre of IFSAShanghai Jiao Tong UniversityShanghai 200240China Tsung-Dao Lee InstituteShanghai Jiao Tong UniversityShanghai 201210China College of Physics and Electronics EngineeringNorthwest Normal UniversityLanzhou 730070China Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China 

出 版 物：《Matter and Radiation at Extremes》 (极端条件下的物质与辐射（英文）)

年 卷 期：2024年第9卷第5期

页      面：22-31页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11991074,11975154,12135009,12005287,and 12225505) the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA25050100) 

主　　题：acceleration scheme angular 

摘      要：A scheme for a quasi-monoenergetic high-flux neutron source with femtosecond duration and highly anisotropic angular distribution is *** scheme is based on bulk acceleration of deuteron ions in an optical trap or density grating formed by two counter-propagating laser pulses at an intensity of-10^(16)W~cm^(2)in a near-critical-density *** deuterons are first pre-accelerated to an energy of tens of keV in the ambipolar fields formed in the optical *** energy is boosted to the MeV level by another one or two laser pulses at an intensity of-10^(20)W~cm^(2),enabling fusion reactions to be triggered with high *** contrast to previously proposed pitcher–catcher configurations,our scheme can provide spatially periodic acceleration structures and effective collisions between deuterons inside the whole target ***,neutrons are generated directly inside the optical *** simulations show that neutron pulses with energy 2–8 MeV,yield 10^(18)–10^(19)n/s,and total number 106–107 in a duration-400 fs can be obtained with a 25μm ***,the neutron pulses exhibit unique angularly dependent energy spectra and flux distributions,predominantly along the axis of the energy-boosting *** microsize femtosecond neutron pulses may find many applications,such as high-resolution fast neutron imaging and nuclear physics research.